Abrasive
Part of speech: noun
Definition: A substance or material such as sandpaper, pumice, or emery, used for cleaning, smoothing, or polishing.
Part of speech: adjective
Definition: Producing abrasion; rough enough to wear away the outer surface. Being rough and coarse in manner or disposition.
Disagreeable
Part of speech: adjective
Definition: Not agreeable, conformable, or congruous; contrary; unsuitable.Exciting repugnance; offensive to the feelings or senses; displeasing; unpleasant.
Example sentence: Don't flatter yourselves that friendship authorizes you to say disagreeable things to your intimates. On the contrary, the nearer you come into relation with a person, the more necessary do tact and courtesy become.